This presentation on satellite communications is designed to provide a broad introduction into this method of radio communications.
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1 This presentation on satellite communications is designed to provide a broad introduction into this method of radio communications. The content of the presentation is directed towards the novice radio enthusiast and will provide the information necessary to access the many amateur radio satellites that predictably circle the globe each day. The content of the presentation will include an overview of satellite classification, tracking and operating satellites, and what type of radio you need to make your first satellite contact. John Palmisano - KB8OIS
2 Table Of Contents Introduction 3 Jumpstart, or Real hams don t read manuals! 3 Specifications 4 An Important Word About Power Levels 4 Important Safety Warning 4 Getting to know your YT Front Panel 5 Rear Panel 6 Installation 7 Compatible Transceivers 7 FT-100, FT-100D Installation: 8 FT-857 and FT-897 Installation 9 Finishing Up Installation 9 Operation 10 Power-up 10 Basic Tuning Operation 10 A Note About Tuning on the FT-100/FT-100D 11 Toggle Bypass Mode: 12 Initiate a Memory Tune Cycle: 13 Force a Full Tune Cycle: 14 Status LED 15 Application Information 15 Mobile Operation 15 Remote Operation 16 MARS/CAP Coverage 16 Operation with a PC / CAT 16 Theory of Operation 18 The LDG YT A Word About Tuning Etiquette 21 Care and Maintenance 21 Technical Support 21 Two-Year Transferrable Warranty 21 Out Of Warranty Service 22
3
4 OSCAR (Orbital Satellites Carrying Amateur Radio) What are they? Orbiting (cross-band) repeaters How are the satellites categorized? Orbital Pattern : (sun-synchronous, dawn-to-dusk) Altitude: LEO ( up to 1000 miles AGL) Name: (AO=American OSCAR, FO=Fuji OSCAR) Mode of Operation: (B or U/V)
5 Unique Features Associated with Satellites : 1. Many can be operated with a Tech. License 2. Low, Timely, and Predictable Orbits 3. Low Power 5 watts 4. HT Transceiver works great! 5. Rubber Duck or Hand-Held Antenna is all that is needed
6 Mode TX Frequency RX A 145 MHz up / 29 MHz down B 435 MHz up / 145 MHz down JA 145 MHz up / 435 MHz down JD 145 MHz up / 435 MHz down K 21 MHz up / 29 MHz down S 435 MHz up / 2.4 GHz down T 21 MHz up / 145 MHz down
7 Keplerian Elements Epoch Orbital Inclination Right Ascension Argument of Perigee Eccentricity Mean Motion Mean Anomaly Drag Epoch Revolution Attitude
8 Doppler Downlink Freq Uplink Freq L O S A O S RX TX
9 Grid square measures 1 latitude by 2 longitude and measures approximately miles. More precise locators can be used that measure 2.5 minutes latitude by 5 minutes longitude, roughly corresponding to 3 4 miles
10 AMSAT Organization: Satellite Status - AMSAT new/satellites/status.php Pass Prediction AMSAT new/tools/predict/
11 What do you Need? VHF / UHF Radio ( dual band ; Mobile/HT, or 2M/10M) Antenna (cross-beam, rubber duck, camera tripod) Compass Computer Access Satellite Location (Keplerian elements) Satellite Operating Frequency / Instructions (AMSAT) Headphones (can be helpful) & SQUELCH!!!
12 Exchange Information (QSO): UM v MSU Football Highlights Call Sign Whiskey Eight Uniform Mike W8UM Location (QTH) - Grid Square Ann Arbor, Michigan about 40 miles west of Detroit 42 deg, 16 min, 14 sec N / 83 deg, 43 min, 35 sec W EN82 (if needed; Echo November Eight Two) Time Limited
13 Courtesy & Patience Acknowledge Their call sign (and location; QTH), your call sign Your Location (Grid Square) EN82 / Echo November Eight Two Listen for their Reply / Response Next Contact eqsl Contact Confirmation
14 You-Tube Video (AO-51) :// Note: Doppler Adjustments to the HT Direction & Inclination of the Satellite Pass Simulation of the Satellite Pass Contact & Acknowledgement
15 Plan ahead! What Mode of operation? Which Satellite? Is the satellite operational? Uplink / Downlink Freq. and Instructions What Time is the pass? Which Direction is the pass? What is the Duration of the pass? What Elevation? (footprint) Simulate the pass (or Ham Radio Deluxe) Tx Power (5w), Tx Vol. Off, Rx Vol. On, Rx Squelch OFF! Use the 4 th Floor Hallway to your advantage
16 W8UM University of Michigan Alpha-spid antenna controller AO-51 at 6:57 pm RX TX
17 HRD / Remote Access Program C:\Program Files\TightVNC\vncviewer.exe
18 Ninja Camera Mount
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